GlanceModifier.Element

interface GlanceModifier.Element : GlanceModifier


A single element contained within a GlanceModifier chain.

Summary

Public functions

open Boolean

Returns true if predicate returns true for all Elements in this GlanceModifier or if this GlanceModifier contains no Elements.

open Boolean

Returns true if predicate returns true for any Element in this GlanceModifier.

open R
<R : Any?> foldIn(initial: R, operation: (GlanceModifier.Element, R) -> R)

Accumulates a value starting with initial and applying operation to the current value and each element from outside in.

open R
<R : Any?> foldOut(initial: R, operation: (GlanceModifier.Element, R) -> R)

Accumulates a value starting with initial and applying operation to the current value and each element from inside out.

Inherited functions

From androidx.glance.GlanceModifier
open infix GlanceModifier

Concatenates this modifier with another.

Public functions

all

Added in 1.1.0-alpha01
open fun all(predicate: (GlanceModifier.Element) -> Boolean): Boolean

Returns true if predicate returns true for all Elements in this GlanceModifier or if this GlanceModifier contains no Elements.

any

Added in 1.1.0-alpha01
open fun any(predicate: (GlanceModifier.Element) -> Boolean): Boolean

Returns true if predicate returns true for any Element in this GlanceModifier.

foldIn

Added in 1.1.0-alpha01
open fun <R : Any?> foldIn(initial: R, operation: (GlanceModifier.Element, R) -> R): R

Accumulates a value starting with initial and applying operation to the current value and each element from outside in.

Elements wrap one another in a chain from left to right; an Element that appears to the left of another in a + expression or in operation's parameter order affects all of the elements that appear after it. foldIn may be used to accumulate a value starting from the parent or head of the modifier chain to the final wrapped child.

foldOut

Added in 1.1.0-alpha01
open fun <R : Any?> foldOut(initial: R, operation: (GlanceModifier.Element, R) -> R): R

Accumulates a value starting with initial and applying operation to the current value and each element from inside out.

Elements wrap one another in a chain from left to right; an Element that appears to the left of another in a + expression or in operation's parameter order affects all of the elements that appear after it. foldOut may be used to accumulate a value starting from the child or tail of the modifier chain up to the parent or head of the chain.